Specifies the application that converted original document to PDF format. Specifies the application that created the original document from which the PDF was converted. Specifies the PDF Specification revision. Describe security and permissions of the document This property indicates if the document is encrypted or not. This property indicates encryption level of the document. This property indicates printing permissions for the document. This property indicates changing permissions for the document. This property indicates copying and extraction permissions for the document. This property indicates permissions for authoring comments and form fields. This property indicates permissions for form fields filling or signing document. This property indicates accessibility permissions for the document. This property indicates assembly permissions for the document.